7-Series V12
Motronic DME 5.2.1 is used for the M73 TU 750iL. This engine management system includes minimum idle speed reduction (530 RPM), long-life spark plugs, input signal from radiator outlet temperature sensor, E-CAT control program function responsibility of DME, CAN bus configuration is completely twisted pair wiring, electrically heated coolant system map thermostat, 2-speed secondary air injection system control, expanded pin assignments to improve comprehensive component monitoring, variable IHKA auxiliary condenser fan speed control, air shrouded fuel injectors with dual cone spray pattern, and main relays are manufactured with an internal control circuit power supply splice off terminal No. 30 (terminal No. 86 is omitted). The air shrouded fuel injectors of the M73 TU incorporate a new dual port injection spray plate in the injector tip that produces a dual cone spray pattern. The dual cone spray pattern improves atomization by separating the spray jets into 2 streams. Injectors have a value of 15 ohms.